Communicable diseases, also known as infectious diseases, are illnesses that can be spread from one person to another, through direct contact, contaminated surfaces, air or animals and insects.

In Australia, these diseases pose a significant public health challenge, but may be preventable through vaccination, hygiene practices and timely medical treatment.

Primary care providers play a key role in educating patients, offering vaccinations, diagnosing and treating communicable diseases, and helping prevent outbreaks through public health measures.

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Last Update: November 18th, 2025